The Mainnet Address Provider can be found here: 0xa298d39715AE492e4CAF3Ccb33cBF57abC5238d7
The Address Provider is responsible for managing most of the addresses for the protocol. It stores key addresses such as:
And specific addresses such as the:
It is built to be extensible so new addresses can be added with new keys.
The Address Provider is imported and stored in many of the protocol contracts. And used as a source of truth for all the core contracts in the protocol. That way, if a core address needs to be udpated, it can be updated just in the Address Provider, and then will propigate through to the rest of the protocol.